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A jewish male, who is often ill- informed on what cool is. Quite possibly, the biggest, penny pinching poser out there.
Me: Dude, that guy is such a gerstein.

Jake: Yeah, he has a really greedy look in his eyes.
by U-nanomous November 07, 2010
A big lovely jewish meat pie. aka surfaceareastein; strawberrystein; meatstein; toothpastestein
hey gerstein don't brush your teeth with the tap water
by uncle howie August 14, 2008